40kn Sail Router
The guide

How to use 40kn Sail Router

Your first route takes five minutes. Understanding what the weather means for your passage takes judgement, and these pages help with both.

  1. Your first route

    From opening the app to a route on the map, in about five minutes.

  2. Planning a passage

    Routing rarely hands you a route to sail as it is. Use it to understand the weather, what it means for your passage, and what your options are.

  3. Your boat

    Choose a polar, then make its speeds, sailing angles and engine match how you really sail.

  4. Reading the result

    What the map, the time axis, the graphs, the report and the routes list tell you.

  5. Install the app

    You can route online without installing. Install it if you rely on it offline, or want your routes and polars kept.

  6. Going offline

    Download the forecast for your sailing area in harbour, test it, and route without a connection at sea.

  7. When it doesn’t work

    What to check when a route looks wrong, or your routes or forecasts have gone.